checking for numeric values..

[meenu_susi]

hi..
i have a text box..where user input their value.
but i want to allow only numeric values not alphabets and blankspaces..
how to do this in asp..

regards
meenu

[lakshmanmcaj]

hi

hi u can do that in using javascript using this script

function Checknum1(obj){

if(obj.value!=="0")
{
//var valid = "0123456789.";
var valid = "0123456789-/() ."

ph=obj.value;

for (var i=0; i < ph.length; i++) {
temp = ph.substring(i, i+1);
//alert ("tmmp is--"+temp+"--");
if (valid.indexOf(temp) == "-1") {
alert("Invalid characters entered.Please enter digits only.");
//obj.value="";

obj.select();
obj.focus();

return false;
}



}

return true;
}
}


use this script in onblur event ok...


regards
laksh

[lipsa]

hi,
u hv a "IsNumeric" function in ASP.Check for it

[lipsa]

in addition 2 my previous answer,
there is a "IsNumeric" function in javascript also.u can use either with much ease
Regards,
Lipsa

[sashi]

Hi guys,

there is an IsNumeric function in VBScript too.. check out the sample code segment.. take care and have a great day ahead.. :)

<%
  If IsNumeric(Request.Form("txtSomeTextBox") = False Then
    Response.Redirect "../somepage.asp"
  End If
%>
 

[SharmaPriyanka]

hi..
i have a text box..where user input their value.
but i want to allow only numeric values not alphabets and blankspaces..
how to do this in asp..

regards
meenu

<SCRIPT language="JavaScript">
function abc(t1)
{
var a,i,s
var count=0
var r=""
var chk=0
a=t1.value.length
for(i=0;i<a;i++)
{
s=t1.value.substring(i,i+1)
if(s>="0" && s<="9"){}
else
{
chk=1
alert("Please enter numerics values only.");
t1.focus();
break;
}
}
}
function IEKeyCap()
{
if ((window.event.keyCode < 46) || (window.event.keyCode > 57) || (window.event.keyCode == 47) || (window.event.keyCode == 46) )
{
window.event.keyCode = 0
};
}
</SCRIPT>


and in textbox-----> onKeyPress='IEKeyCap()' onBlur='abc(this)'

[rajivtyagi4u]

hi..
i have a text box..where user input their value.
but i want to allow only numeric values not alphabets and blankspaces..
how to do this in asp..

regards
meenu

hi
u jsut check the ASCII value of the input character and then validate the user to give the input only numeric values like
u run a loop and set it i=ascii value of 1(whatever the ascci value of 1) to ascii value of 9
then check it ok